Load vehicle bed



May 23, 1950 J. H. PLA

LOAD VEHICLE BED 2 Sheets-Sheet l Filed Jan. 28, 1949 [N VENTO/2:

Arron/vens:

Patented May 23, 1950 Application Januari? 2s, 1949,'seri'1No. 73,302 In Cuba December-.'18,r 1948 Y This invention relates to load vehicles, partici? ularly tovehicles for hauling 4sugar cane, such as for example oX-carts and-motor trucks, though the invention may as well be adapted to vehicles for carrying other materials such as for exampleconstructionmaterialsgetd "The object ofthis invention is'to provide aL ve'- hiclejbedhaving a, sliding and backward dumpscia-191s. (c1. ges-71g) ing 'platformonwhichthe load is charged, so

that the load Ycan be discharged at the delivery place with the least stress and thedischarged load willnot interfere with the; vehicle wheels. @Such performance `is attained by providing the sliding platfrm'with bolsters slidably mounted between channeled `guidev railsj including jantifriction membersat the vehicle-'bed to facilitate the'slidable movement of the platform, and the platform bolstershaving stop members serving to denne the resting and dumping positions-of the platform, one of the stop members also servingfas a pivot-shaft for the dumping motion of the platform; whereupon the loaded platform will lbe safely supported and kwill not give rise to acci# dents due to the release of theload, thus aA strong, inexpensive, and quick operatingstructure being provided f u; i The vinvention is described with reference to the- -gures of the accompanying drawings, of which; ,l .Y

Figf v1 is aetop plan view, partly broken away, ofayload--vehicle bed kembodying thesliding and dumping platform ofthisinvention. j

u,Fg. Y2 isalongitudinal vertical section view of the j bed-and platform in the normal resting position-ofthe -latterxjy j -,-Fig.- 3 is-Vla section lvievvjsimilar tov that of Fig. 2,s howing the platform inthe position prelimin aryrto-the dumping motionzV y f' #Figa 4-iisf-a sectionilview similar toI that of Fig. 2, inthe dumping position' ofthe platform.

y#Fig-f5-fis a partial j-horizon-tal plan view of the bed-andiplatform, showing they position of one of theplatform bolstersjin the position preliminarifto the dumping motion.'

Fig. 6 is a Ycross-section vertical section view on line 6 -6 ofFig. 1. w

'Fig 'l isa lcross-section VertiCalseCtiQn, view on line I-l of Fig. l.

Figs. 8 nd"`9"ar sidev elevational rviews of a load truck, respectively showing the platformin isresting andzdumping positions. ff the drawings, 4I* indicatesthe side^bolsters, 22the heads -and the crossbraces of aload-vehicle bed, such as for exam'plethe bed of a motor vehicle such a'sth'e"truck illustrated in Figs. 8 and@ fof the drawings', 'wliereinthe bed is secured'to 'the-motor vehicleichssis 4. '"1

For the purpose of this invention, the side holsters I are twice as high as the heads 2 and cross braces 3, and each bolster l has at the bolsters L6, the.l'1eads. I'I,andA the. cross which rare, securedby the Ihead screws ,19411303 upperhaif 'portionpf the inner side face `thereon channeled recess 5.serving to lodge metal plates ,i6 and 'I having mounted thereonk antifriction prof `iectirrg.balls 40y andM, said plates being secured to vthe upper and lower faces of the recess 5f The heads v2 and crossl braces "3. have 1secured thereon a Iguide rail, 8 formed by awooden member `of squarel section positioned parallelly to the bolster IA at, a certain. distance therefrom, said: guide member 8 having a longitudinalrecess `9 at; its s ideiace Oppositethe inner side face of the bol@ sterpl, and the. recess 9 being of the same height as thefrecess 5 .of the latter andintransversal alignment. with` thel Samet-the recessA .9i having secured .to itsupper and` lower faces metal plates I Land II having imountedthereon antifriction projectingballsALand 43.@V f Between the plates 6 .andy 1 with-,antifriction projectingsballs. 40and 4I of the side bolstenfl and'theplates II) and I ,I withantifriction proj e cting ballsl I0 and VII of theinner guide railil are, slidably mounted-two pairs of,Y journals I2 andgl A3, I4, and I 5, the twoL journals. of, each .pair

- being in, transversalalignment and theejournals c' ftlf1 e l twopairsrespectively projecting fromv the fore. end andntermediate point-,ofthe op; posedsidelfacesof, the side bolsters I6-.of the sliding and dumpngrplatform formed `by thetwo bracesd the, bolsters i6, and` uporrfthev ,heads`f|. 1, and cross bracesy Imavbe disposed a wooden or metal` lining (notshovvn) .to receiveY the `load .to

lbe,charged by thevehicle ,The normal, resting position of; the sliding. and dumpingplatform isdetermnediby the abutment of the journals I2 and I3 of each bolster.: I6 .with the fore closed ends ofthe channeled ,recesses 5 of the boltsers ,I `and theehanneled recessesSof theguide rails, 8,. andl the. dumping. ,preliminary position 0f...the sliding and dumpinefplatformis determined by recesses. ltand 2.1,.Aformedinfthe top face of each side bolster. I e andeaclnin'ner guide rail ,8,7I .Whichrecesses ,fare in transversal alignment ltojornfl, a ,soruof slot situatedbeyond naif `the 1errgth. orv the` holsters. |...fromt the ,forel head 2,to, re eive vand allow the journals t! Zrncll I tI or, the holsters L6 ,0f `the sliding platform cto-` rise .Outbeyond the 'recesses 2.a11,d,2.1w11en"the Journale. I4 Vand I5, 0f. the., holsters L6 .abut ,the rear closed ends., of the channeled recesses .5. Tand; sr of the holsters |y `antiStnegmde ,rails 8,..resio'e.c.f. tively, in which position thegjournals I II;tn1 :lI

may serve Aas a pivot shaft for ther-backward dumping movement of the platform, shown in Fig. 4 of the` drawings, along an angle ofrabout 30%in which positionthe platform will bear` upon an inclined cut 22 formed in the rear head 2 of the vehicle stationary bed..

The sliding and backward dumping platform one drum, 24, being mounted on the rear end of the chassis 4 and another drum, 25, being mounted on the intermediate portion of the chassis 4, the former drum 24 serving to operate two cables 26 tied to hooks 21 at the fore ends of the outer side facesof the bolsters i6 of the sliding and dumping platform, and the latter drum serving to operate a cable 28 disposed on the longitudinal middle line of the chassis 4 and being upwardly guided by horizontal-shaft sheaves 29 and 3U mounted on a supporting piece 3l secured to the fore face of the fore head 2 of the stationary bed and tied to a hook 32 secured to the fore face of the fore head Il of the sliding and dumping platform. The winding drums 24 and 25 of the cables 26 and 28 are provided with suitable racket mechanisms and are operated by handles 33 and 34. In this manner, to cause the sliding and dumping platform to move backwards, the drum 25 is released and the drum 24 is operated to wind the cables 26 until the journals I2 and I3 register the slot formed by the recesses 2!) and 2| and the journals I4 and I5 abut the rear ends of recesses 5 and 9, in which position the platform can be tilted backwards about the journals I4 and I3 thereby pulling the cable 28 whose exposed length is regulated by means of drum 25. Once the load is dumped, the drum 25 is released and the drum 24 is operated to wind the cable 28 which will pull the fore end of the platform and cause it to move down until the journals I2 and I3 engage the slot formed by the recesses 20 and 2|, in which position the drum 25 will be operated to wind the cables 25 which will pull the platform forward, whereupon the journals I2 and I3 will run between the antifriction plates 6 1, I --II of the bolsters I and the slide rails 8 of the stationary bed respectively, to the resting position determined by the abutment of journals I2 and I3 with the fore closed ends of the channeled recesses 5 of the bolsters I and the channeled recesses 9 of the slide rails 8.

It is obvious that changes may be made in the construction details of the sliding and dumping platform and the means tooperate it, without thereby altering the essential character of the invention which is such as claimed hereinafter.

What I claim is:

1. A load-vehicle bed provided with a pair of inter-spaced longitudinal guide members, a platform slidably mounted on the bed by means of a longitudinal slidable bolster between the longitudinal guide members of the bed, the bolster of the platform including fore and intermediate stop members to determine the end forward and backward positions of the platform, and the guide members of the bed having transversal slots at an intermediate point thereof to give way upwards to the fore stop members of the platform when the intermediate stop members reach the rear end of the guide members of the bed, so that as the platform takes said position 4 l the same may be tilted backward, and means mounted on the vehicle frame to operate the platform backwardly and forwardly.

2. A vehicle bed provided with pairs of interspaced longitudinal guide members, a platform slidably mounted on the bed by means of a pair vof longitudinally sliding bolsters between each two longitudinal guide members of the bed, the platform bolsters having pairs of transversal journals disposed in transversal alignment the two journals of each pair, one pair of journals being situated at the fore end of the platform bolsters and the other pair of journals being situated at an intermediate point of the platform bolsters, said journals serving to determine the forward and backward end positions of the platform and the rear journals serving at the rear end position as pivot shafts for the tilting of the platform, and the bed guide members having transversal slots at an intermediate point thereof to give way upwards to the fore journals of the platform at the same time that the intermediate journals thereof will reach the rear end of the members of the bed and serve as pivot shafts for the backward tilting of the platform, and means mounted on the vehicle to operate the platform forwardly and backwardly.

3. A vehicle bed provided with inter-spaced pairs of bolsters having channeled recesses at their inner opposed faces, antifriction members secured to the upper and lower faces of the channeled recesses of said bolsters, a platform slidably mounted on the bed by means of bolsters longitudinally slidable between each two bolsters of the bed, the bolsters of the platform having pairs of transversal journals and the two journals of each pair being in transversal alignment and disposed between the friction members of the bed bolsters, one pair of journals being situated at the fore end of the platform bolsters and the other pair of journals being situated at an intermediate point of the platform bolsters, said journals serving to determine the forward and backward end positions of the platform as the same abutt the respective closed ends of the channeled recesses of the Ibed bolsters, and in the end rear position the intermediate journals serving as pivot shafts for the backward tilting of the platform, the bed bolsters having transversal slots at an intermediate point thereof to give way upwards to the platform fore journals at the same time that the platform intermediate journals will reach the closed rear ends of the channeled recesses of the bed bolsters to serve as pivot shafts for the backward tilting of the platform, and cable winding means secured to the platform and mounted on the vehicle frame to operate the platform forwardly and backwardly.

JOS HERNANDEZ PLA.

REFERENCES CITED The following references are of record in the ille of this patent:

UNITED STATES PATENTS Number Name Date Re. 17,497 Robinson Nov. 19, 1929 1,051,340 Madden Jan. 21, 1913 1,555,694 Murdock et al Sept. 29, 1925 FOREIGN PATENTS Number Country Date 17,235 Australia of 1928 

